So I have this huge yeast cake from the five gallons of cider I'm about to rack to secondary. Used the wyeast Pasteur liquid champagne yeast for this batch. Any ideas on what to do with it? Can I repitch this onto more apple juice?
Not really advisable, as it can cause off flavors. However, beer brewers do it, but that is partly because they have quick turn over. Cider and wine sometimes go a year (harvest), so it is culturally frowned upon.
I have done this and not noticed any off flavours, but yeast washing may be better. I plan on trying yeast washing on my next batch but the threads say you should only go about 4 generations and then you should buy new yeast.